Enhanced dominant mode operation of a shielded multilayer coplanar waveguide via substrate compensation

Author

Lyons, Michael R. ; Gilb, James P K ; Balanis, Constantine A.

Author_Institution

Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA

Volume

41

Issue

9

fYear

1993

fDate

9/1/1993 12:00:00 AM

Firstpage

1564

Lastpage

1567

Abstract

The cutoff frequency of the first higher-order even mode in a shielded multilayer coplanar waveguide (CPW) is studied using the spectral domain approach (SDA). The effective dielectric constant for the dominant odd and first higher-order even mode in a shielded multilayer CPW is computed and compared to other published numerical results. Dielectric constant and substrate height are varied with respect to even mode cutoff frequency and plotted for several CPW structures. Different combinations of internal substrates are shown to produce even mode cutoff frequency maximization for increased odd mode operation bandwidth

Keywords

MMIC; dispersion (wave); microstrip components; permittivity; spectral-domain analysis; substrates; waveguide theory; coplanar waveguide; cutoff frequency; dominant odd mode; effective dielectric constant; enhanced dominant mode operation; even mode cutoff frequency maximization; first higher-order even mode; odd mode operation bandwidth; shielded multilayer CPW; spectral domain approach; substrate compensation; substrate height; Bandwidth; Circuits; Conductors; Coplanar waveguides; Cutoff frequency; Dielectric constant; Dielectric substrates; MMICs; Microstrip; Nonhomogeneous media;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.245678

Filename

245678